亚太地区中子周围剂量当量（率）仪的校准比对

适当的校准方法是保证中子周围剂量当量（率）仪测量结果准确可靠的重要因素。本文介绍了亚太地区首次中子周围剂量当量（率）仪校准比对APMP.RI(Ⅲ)-S1，以及韩国、澳大利亚、印度、中国台湾、中国大陆、日本和俄罗斯等国家和地区的计量院的放射性核素中子参考辐射场及比对结果。本文利用实验室建立的²⁴¹Am-Be和²⁵²Cf中子源参考辐射场对两台比对传递仪器进行了校准，并将校准结果进行了比较。结果表明，本实验室采用影锥法和距离反平方法的校准因子与比对参考值在不确定度范围内一致。

APMP Key Comparison for Calibration of Neutron Ambient Dose Equivalent Meter

Proper calibration methods are important aspects to ensure good results of neutron ambient dose equivalent meters .The APMP.RI(Ⅲ )‐S1 for the calibration of neutron ambient dose equivalent meters was introduced in this paper .The radionuclide neutron reference radiation fields and the calibration results of the metrology institutes of Korea ,Australia ,India ,China Taiwan ,China ,Japan and Russia were shown .Two comparison transfer instruments were also calibrated by China Institute of Atomic Energy in the 241 Am‐Be and 252 Cf neutron reference radiation fields ,and the calibration results were compared with the APMP.RI(Ⅲ )‐S1 results .The results show that the calibration factors obtained with the shadow cone method and the distance inverse‐square method of our laboratory and the reference value are consistent with each other within the uncertainties .